Rediscovery of Althenia (Potamogetonaceae) in Portugal, 168 years after the last collection

IF 1.9 4区生物学 Q2 MARINE & FRESHWATER BIOLOGY Aquatic Botany Pub Date : 2024-07-02 DOI:10.1016/j.aquabot.2024.103790

Duarte G. Frade, João Neiva, Anne Davison, Gareth A. Pearson, Ester A. Serrão

引用次数: 0

Abstract

Althenia (Potamogetonaceae) is a small genus of aquatic angiosperms from saline environments that includes the most recently evolved seagrass, Althenia marina. One or two species occur in Europe, both rare and considered Data Deficient at the regional level. We report the first records of Althenia in Portugal since 1853: two populations in the Algarve and a third in central Portugal. As in previous studies, all Portuguese populations include plants with and without visible nerves in the leaf sheaths, a character used to distinguish between A. orientalis and A. filiformis. We tentatively recognize a single Althenia species in Eurasia, pending further studies. We recommend further searches of suitable habitat, as Althenia species are small and easily overlooked, as well as monitoring and safeguarding of known populations through in situ and ex situ conservation.

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在葡萄牙重新发现 Althenia（Potamogetonaceae），距上次采集已有 168 年之久

Althenia（Potamogetonaceae）是盐碱环境中的一个小型水生被子植物属，包括最新进化的海草 Althenia marina。欧洲有一两个物种，都很罕见，在地区一级被认为缺乏数据。我们报告了自 1853 年以来葡萄牙首次记录到 Althenia：两个种群位于阿尔加维，第三个种群位于葡萄牙中部。与之前的研究一样，葡萄牙的所有种群都包括叶鞘中有叶脉和无叶脉的植株，叶脉是用来区分 A. orientalis 和 A. filiformis 的特征。我们暂时认为欧亚大陆只有一个 Althenia 物种，有待进一步研究。我们建议进一步寻找合适的栖息地，因为Althenia物种很小，很容易被忽视，我们还建议通过原地和异地保护对已知种群进行监测和保护。

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来源期刊

Aquatic Botany 生物-海洋与淡水生物学

CiteScore

3.80

自引率

5.60%

发文量

审稿时长

6 months

期刊介绍： Aquatic Botany offers a platform for papers relevant to a broad international readership on fundamental and applied aspects of marine and freshwater macroscopic plants in a context of ecology or environmental biology. This includes molecular, biochemical and physiological aspects of macroscopic aquatic plants as well as the classification, structure, function, dynamics and ecological interactions in plant-dominated aquatic communities and ecosystems. It is an outlet for papers dealing with research on the consequences of disturbance and stressors (e.g. environmental fluctuations and climate change, pollution, grazing and pathogens), use and management of aquatic plants (plant production and decomposition, commercial harvest, plant control) and the conservation of aquatic plant communities (breeding, transplantation and restoration). Specialized publications on certain rare taxa or papers on aquatic macroscopic plants from under-represented regions in the world can also find their place, subject to editor evaluation. Studies on fungi or microalgae will remain outside the scope of Aquatic Botany.